<template>
  <div>
    <div ref="mychart" style="width: 100%; height: 600px"></div>
  </div>
</template>

<script>
import * as echarts from "echarts";
export default {
  data() {
    return {
      arr: {
        legend: {},
        tooltip: {},
        dataset: {
          source: [
            ["product", "2012", "2013", "2014", "2015", "2016", "2017"],
            ["Milk Tea", 86.5, 92.1, 85.7, 83.1, 73.4, 55.1],
            ["Matcha Latte", 41.1, 30.4, 65.1, 53.3, 83.8, 98.7],
            ["Cheese Cocoa", 24.1, 67.2, 79.5, 86.4, 65.2, 82.5],
            ["Walnut Brownie", 55.2, 67.1, 69.2, 72.4, 53.9, 39.1],
          ],
        },
        series: [
          {
            type: "pie",
            radius: "20%",
            center: ["25%", "30%"],
            // No encode specified, by default, it is '2012'.
          },
          {
            type: "pie",
            radius: "20%",
            center: ["75%", "30%"],
            encode: {
              itemName: "product",
              value: "2013",
            },
          },
          {
            type: "pie",
            radius: "20%",
            center: ["25%", "75%"],
            encode: {
              itemName: "product",
              value: "2014",
            },
          },
          {
            type: "pie",
            radius: "20%",
            center: ["75%", "75%"],
            encode: {
              itemName: "product",
              value: "2015",
            },
          },
        ],
      },
    };
  },
  mounted() {
    this.getlist();
    window.addEventListener("resize", this.mychart.resize);
  },
  methods: {
    getlist() {
      //1.获取dom
      const chartDom = this.$refs.mychart;
      //2.初始化
      this.mychart = echarts.init(chartDom);

      //   配置图表数据
      const option = this.arr;

      //4.渲染生成图表
      this.mychart.setOption(option);
    },
  },
};
</script>
